Connectivity issues
A number of conditions can disrupt connectivity, including:
Firewall issues can prevent connectivity.
A network change occurred. Typically a DNS, system domain, or hostname change is the culprit.
Oracle service is not running.
Network timeouts
The following list suggests actions you can take to determine what is causing the issue.
Ping from the primary server.
Check if you can connect to telnet port 80.
Portal server fails to connect to database server and the following error is logged in portal.log.
Error code: APT-UI-1556759233 The Network Adapter could not establish the connection
Possible root causes:
Oracle service is not running.
Firewall is enabled and database port is not configured properly.
SELinux is set to enforce.
Required memory is not available to run Oracle.
Resolution:
- Check if Oracle service is running:
# /opt/aptare/bin/oracle status - Check for errors in the respective log files:
Linux:
/opt/aptare/oracle/rdbms/log/startup.logWindows:
C:\opt\oracle\rdbms\log\startup.log - Verify whether Firewall is disabled.
- If Firewall is enabled, ensure the database port (typically 1521) is allowed for inbound connections.
- Ensure SELinux status is either disabled or permissive.
# getenforce
- Connect to database using sqlplus on portal server and run basic sql commands like select * from ptl_users.